Hollansburg, Ohio is a small village located in Darke County in the southwestern part of the state. The climate in Hollansburg is classified as humid continental, characterized by hot summers and cold winters. Average temperatures range from around 30°F (-1°C) in winter to 80°F (27°C) in summer. Precipitation is evenly distributed throughout the year, with an average annual rainfall of about 40 inches (1016 mm).

Hydrologically, Hollansburg is surrounded by several streams and small creeks, including Four Mile Creek and the Prairie Creek. These waterways offer opportunities for fishing, boating, and other water-based activities. Hollansburg is also close to the Greenville Creek, which is known for its scenic beauty and provides additional outdoor recreation opportunities such as canoeing and kayaking.

In terms of outdoor recreation, Hollansburg is surrounded by picturesque rural landscapes, making it an ideal location for activities such as hiking, biking, and bird-watching. There are several nature preserves and parks in the vicinity, including the Shawnee Prairie Preserve and Bear's Mill Wildlife Area, which offer trails and wildlife viewing opportunities.

Overall, Hollansburg, Ohio offers a moderate climate, access to waterways, and various outdoor recreation opportunities for nature enthusiasts.